Other Assets (Parenthetical) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Leasing commissions, accumulative amortization	$ 19,606	$ 16,829
Lease incentives, accumulated amortization	2,590	2,220
Other intangible assets, accumulated amortization	1,554	4,239
Debt issuance costs, accumulated amortization	$ 2,985	$ 2,374